Becoming a Prime Contractor With MoDOT

Step 1 – Prequalification

To bid as a Prime Contractor, vendors must have a Prequalification Contractor Questionnaire approved and on file with MoDOT, along with any required documentation 7 days prior to the bid opening.

Updated as of July 2025. Hard copy submittals will no longer be accepted.

Code of State Regulations – Contractor Prequalification - Title 7 CSR 10-15.010 

 

Direct questions regarding prequalification to   ContractorSupport@modot.mo.gov  Phone: 573-751-8305

Submit the completed questionnaire and any required documentation to:  ContractorSupport@modot.mo.gov. 

 

Step 2 – Register to Bid

 Questions or concerns regarding bid document preparation should be directed to bidquestions1@modot.mo.gov  Phone: 573-751-9253

Upon registering to bid, vendors should also register with MoBuys, as all MoDOT contract payments will be made through MoBuys. Registration with MissouriBUYS ensures prompt payment and allows vendors to update important information such as address changes or banking information. In addition, registration in MissouriBUYS allows contractors to view other bid opportunities with the State of Missouri. MissouriBUYS Statewide eProcurement System (mo.gov)

 

Step 3 – Before Beginning Work

  • If not already registered, register with MoBuys.  All contract payments will be made through MoBuys.
  • A Certificate of Insurance that is contract specific is required to be on file with MoDOT for the prime contractor before working on the project.
  • Out of State Contractors – All out of state contractors must review the Business Tax Registration link to determine their proof of compliance with the Missouri “nonresident employers” financial assurance laws as described in Sec 107. Before performing any work on a project, the contractor must submit to the MoDOT Construction Contract Administrator a copy of their Transient Employer Notice of Registration, or their exempt letter as issued by the Department of Revenue.  Contact the Department of Revenue - Taxation Division for additional assistance businesstaxregister@dor.mo.gov     Phone: 573-751-0459